If you take the time to spell out generic complaints, it feels bad to throw that away. I think that a good compromise is to have a system that allows a summary of the review to be posted with the comments, so you can mention the important thing up front.
It isn't even about feeling bad, it's that if they write it they're going to make the same mistakes again in a little bits. If someone misspells a word habitually and you think maybe it should be spelled correctly (or whatever fix) then maybe that needs to get pointed out needs to be taken into account when they do some big rewrite.
